The US almost lost its measles elimination status once. Lessons from that episode suggest it will be more difficult to avoid doing so now.

Clinical trials have shown that six-monthly injections of lenacapavir are almost 100 percent protective against becoming infected with HIV. But big questions remain over the drug’s affordability.

NB.1.8.1 has mutations that could increase the virus’s transmissibility and decrease the efficacy of certain neutralizing antibodies against it.

The Gates Foundation is expected to spend $200 billion over the next 20 years to support causes related to health and human development.